I bought a NIB Deadpool Pro back in November. About 2 months ago I starting noticing that when I press my flipper buttons to change the skill shot, the lights will do things like skip lanes, not change at all, or all lanes will go out. Happens about 25% of the time. Sometimes my 2x-5x will even flash when I press them but that's much more rare. I had pinstadiums in for a couple months before this happened, but it still does it if I unplug them. Any ideas what could be causing this? Doesn't really affect gameplay because the skill shots still register, just a bit annoying.